Kappa Necklace

Cannot be auctioned, traded, or bazaared, but can be delivered to a character on the same account.
Can be obtained as a random reward from the Gobbie Mystery Box Special Dial and similar sources.

In Japanese mythology, a Kappa is a water creature with a hollow on the top of its head filled with water. It was said that the water was the source of its power, and it could easily be defeated by tricking it to bow and causing the water to fall out of its hollow. This is fitting, considering the Ninja tools effect.

Kappa (uppercase Κ, lowercase κ or ϰ; Greek: Κάππα) is the 10th letter of the Greek alphabet, used to represent the voiceless velar stop, or "k", sound in Ancient and Modern Greek. In the system of Greek numerals it has a value of 20. It was derived from the Phoenician letter Kaph. Letters that arose from kappa include the Roman K and Cyrillic К.